Float-controlled valve.



W. S. BELLOWS. FLOAT GQNTROLLED VALVE. APPLIoATIoN rmzn JUNE: 17. 1909.

970,167. Patented sept. 13, 1910.

INVENTOR 7/4', ATTORNEY V/ l f f f WINFIELD S. BELLOWS, 0F STEELTON,PENNSYLVANIA.

FLOAT-CONTROLLED VALVE.

Specification of Letters Patent.

Patented Sept. 13, 1910.

.Application led June 17, 1909. Serial No. 502,692.

T o all whom it may concern:

Be it known that I, VVINFIELD S. BEL- Lows, citizen of the UnitedStates, residing at Steelton, in the county of Dauphin and State ofPennsylvania, have invented certain new and useful Improvements inFloat- Controlled Valves, of which the following is a specilication.

My invention relates to float-controlled valves, and it consists of animproved form of flush-tank valve designed to close with the pressure,being finally forced to its seat thereby.

My invention is fully shown in the drawings herewith, and other featuresof the same are fully pointed outJ hereinafter.

Figure 1 is a vertical section of a flush tank equipped with my improvedvalve. Fig. 2 is an enlarged vertical section of the valve structure.Fig. 3 is a horizontal section on line a-a, Fig. 2.

In Fig. 1, 1 represents an ordinary flush tank having an outlet pipe 2,with any usual form of siphoning overflow valve 3 controlled by a lever4 which may be operated by an ordinary chain pull. Such parts may be ofany type.

The pipe for the inlet of water is indicated at 6, and connected to theupper end of the same is a casting 7 forming the valve casing. Thiscasting has a lower projecting end 8 extending through the bottom of thetank and secured in any suitable manner to the pipe for the inlet ofwater. The casting forming the valve casing has a vertical bore 9forming the valve chamber, the passage 10 leading from the inlet pipehaving a curved portion 11 which communicates with the upper end of suchchamber. The upper portion of the vertical bore is threaded at 12 forthe reception of a plug 13 which forms the top of the valve casing,while the lower part of the casting adjacent the bore 9 is recessed at14 and 15 for a purpose to be described.

The valve consists of a stem 16 having a rectangular recess- 17 and areduced upper end 18. The valve proper comprises a tubular section 20adapted to pass over the threaded portion of the stem and be secured bya nut 21.

The valve is mounted in the casing in the manner clearly shown in Fig.2. Pivotally mounted in the recess 14 of the casing is an arm 23, havinga projecting end 24; which enters the recess 17 of the valve stem, whileits opposite end 25 is bored to receive the arm 26 carrying the ball orother form of float 27. To steady the stem of the valve, a roller 28,mounted in the recess 15 of the casing and arranged to turn upon asuitable spindle 29, engages the stem. This roller prevents any bindingupon the valve stem and insures its vertical rise and fall. The casingis provided with a seat 30 for the valve, the bore 9 of the same beingcontracted to form the seat.

lVhen the tank empties, the weight of the ball or other-.float causes itto follow the level of water and turn on its pivotal connection with thecasting forming the valve casing. As it turns, the projecting end 24engages the valve stem and raises the valve from its seat against thepressure of the entering water, while the roller 28 steadies the stem.As the water lills the tank after the flushing operation, the ball orother float is raised, and as it turns on its pivotal connection withthe casting, it lowers the valve, being assisted in such action by thewater pressure. A slight amount of play is provided between theprojection 24 of the arm 23 and the upper and lower walls of the recess17; in the one instance permitting the discharge to commence before thevalve is opened, and in the other allowing the valve to be seatedfinally by the water pressure.

The construction is at once cheap, simple in operation and not liable toget out of order.

I claim 1. The combination of a casting forming a valve casing providedwith a valve seat and having a downward discharge, a vertically movablevalve disposed within the casing and movable by gravity toward saidscat, a stem projecting downwardly from said valve, a roller mounted inthe casing on one side of said stem and engaged therewith, and an armpivoted to the casing on the side of the stem opposite to the roller andengaged with said stem for raising the same.

2. The combination of a casting forming a valve casing provided with avalve seat and having a downward discharge, a valve disposed within thecasing and movable toward and from said seat, a stem projecting fromsaid valve and having a recess formed therein, a roller mounted in thecasing on one side of said stern and engaged therewith, and an armpivoted to the casing on the side of the stem opposite to the roller andextending into said recess and arranged to operate said stem, said stemhaving a wall between said arm and said roller.

3. The combination of a casting forming a valve casing provided with avalve seat and having a downward discharge, a valve disposed within thecasing and movable toward and from said seat, a stem projecting fromsaid valve and having a recess formed therein, a roller mounted in thecasing on one side of said stem and engaged therewith, and an armpivoted to the casing on the side of the stem opposite to the roller andextending into said recess and arranged to operate said stem, said stemhaving side walls engaged by the sides of said arm, said stem having endwalls arranged to be engaged by said arm when moved to open and closethe valve and said stem having a wall between said arm and'said roller.

4. The combination of a casting forming a valve casing and having avertical bore, a vertically movable valve disposed within the casing,means for closing the upper end of said bore, the latter beingcontracted to form a seat for the valve, and the casting being recessedadjacent the outlet controlled by the valve, a roller disposed in one ofsaid recesses for engagement with the stem of the valve and an armpivotally mounted in the other recess for engagement with said valvestem.

5. The combination of a valve casing having a downward discharge, avertically movable valve mounted therein, a stem carried by said valve,the seat for such valve being within the casing and the stem oit' thesame projecting through the discharge opening of the latter, such valvebeing arranged to close with pressure passing through said opening, saidstem having a recess, an arm pivoted to the casing and having aprojection for engagement with saidrecess whereby the valve may beraised from its seat, a float connected to said arm, and a rollercarried by the casing for steadying the movements of the valve, therecess of the valve stem being slightly enlarged so as to provide forslight movement of the arm in both directions independent of itsengagement with the valve stem.

In testimony whereof I aflix my signature in presence of two witnesses.

WINFIELD S. BELLOVVS.

Witnesses:

ALBERT B. SMlTH, MARY E. SPAHR.

